Differentiation between Write Back Caches and Write Through

Question

Write down the differentiation between Write Back Caches and Write Through? Elucidate merits and demerits of each?

Answer 1

The contrast can be made out of two aspects:
I) Integrity of Data
II) Performance

Write through is enhanced in integrity as it will flush for every writes.

Write back holds the write until the same cache line has to be employed for a read, which question the data

integrity when many processors access the similar region of data using its own internal cache.

Write Back - offers a better performance, as it save numerous memory write cycles or write.

Write Through – Does not offers this presentation compared to write-back.